Mine would be along the clear line. I was thinking of using an opal - so it would be clear/whitish except when the light hit it and then it would throw colors everywhere! If that wouldn't work, then I would use one of those black (Tahitian) pearls - then the blade would be a black/silver/purple color.

I think I would go with blue, though I have no particular reason for it. It's just a good, solid color. It doesn't matter what color it is for me, though, since I'd lose any duel pretty quickly anyway. My lightsaber would just be a souvenir for whoever severed my arm with it.

Actually, if you take Incom4's numbers (especially taking into account Episode II results), then red is clearly the color of choice. Just wait until Episode III when red gets really hot and goes a big time winning streak.